SMB
SMB (SubMiniature version B) connectors are coaxial RF connectors developed in the 1960s. This version is smaller than SMA connectors. They feature a snap-on coupling and are available either in 50 Ω or 75 Ω impedances. Cross RF SMBs offer excellent electrical performance from DC to 4 GHz.
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Requirement
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MIL-C-39012
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Specification
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| ELECTRICAL DATA | ||
| Impedance | 50Ω | |
| Frequency range | DC to 4GHz | |
| Contact current | DC 1.5A max. | |
| Voltage rating | 250V rms | |
| Contact resistance | 3-16 | Center contacts : 3.0 mΩ |
| Outer contacts : 0.5mΩ | ||
| Insulation resistance | 3-11 | 1000MΩmin. |
| Insertion loss | 3-27 | 0.6dB max. |
| V.S.W.R | 3-14 | Straight 1.3+0.04f(GHz) |
| Right angle 1.4+0.06f(GHz) | ||
| RF leakage | 3-26 | -55dBm min.between 2~3GHz |
| MECHANICAL DATA | ||
| Engagement force | max. 63N | |
| Mating torque | Not applicable | |
| Life | 3-15 | 500 matings. |
| Contact captivation | 3-14 | max. 15N |
| ENVIRONMENTAL DATA | ||
| Temperature range | : -65℃~+125℃ | |
